Ken Rodrigo, 40, of New City, with his kids Holden, 5, and Sawyer, 4. To keep cool Sunday, the family spent the day at Germonds Park in West Nyack.

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The Lower Hudson Valley suffered through its first official heat wave of the summer with a third day of excessive heat as temperatures hit a high of 93 degrees on Sunday.

The heat index, or the combined effect of temperature and relative humidity, reached a sweltering 96 degrees, according to the National Weather Service's website.

A little relief is expected on Monday and Tuesday, with temperatures in the mid 80s, but forecasters warned they are likely to be accompanied by showers and thunderstorms. The hot and sticky weather could last through Friday. ...